"Through the Gates of the Silver Key" is a short story co-written by American writers H. P. Lovecraft and E. Hoffmann Price between October 1932 and April 1933.

A sequel to Lovecraft's "The Silver Key", and part of a sequence of stories focusing on Randolph Carter, it was first published in the July 1934 issue of Weird Tales.

He explains that after performing its ritual, the Silver Key took Carter to the Outer Extension, a realm transcending spacetime, by transporting him through a cosmic structure known as the First Gate.

Carter explains that he would love to know more about the facets of a particular long-extinct race on a distant planet, Yaddith, which is constantly threatened by the monstrous Dholes.

The crisis causes Zkauba's mind to reassert itself, and the alien wizard enters a curious, coffin-shaped clock (implied to be Carter/Zkauba's means of transport to Earth) and disappears.

Thus many of the central ideas of the story like 'Umr at-Tawil, the talk of mathematical planes and multiple facets of Randolph Carter throughout Time and Space come from Price, who was well read in neoplatonic thought, theosophy and the occult.

"[5] The story appeared under both authors' bylines in the July 1934 issue of Weird Tales; Price's draft was published as "The Lord of Illusion" in Crypt of Cthulhu No.

[6] Lovecraft scholar Will Murray says of "Through the Gates of the Silver Key", "As a Dunsanian fantasy, the Price/Lovecraft collaboration is a failure; as a Mythos story, it is rich with ideas, but curiously diluted.